What is ICO (Windows Icon File)?
Definition
ICO is a container format for storing multiple icon images at different sizes and color depths.
Features
- •Multiple sizes in one file
- •16x16 to 256x256 pixels
- •Contains PNG or BMP data
- •Supports transparency
Advantages
- ✓Standard Windows icon format
- ✓Multi-resolution in single file
- ✓Favicon support
Use Cases
- ▶Windows application icons
- ▶Website favicons
- ▶Software development
How to Open
Windows Explorer, image editors with ICO plugin.
Developer & Release
Developed by Microsoft. Part of Windows since version 1.0.